Liquid-ejector



(No Model.)

T. J. HOLMES. Liquid Ejector.

Patented Oct. 12, 1880.

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NVPETERS, PHOTO-UTHOGRAPH ER. WASHINGTON. D C.

llJNrrED STATES PATENT Erica THOMAS J. HOLMES, OF BOSTON, MASSACHUSETTS.

LIQUID- EJ ECTO R.

SPECIFICATION forming part of Letters Patent No. 233,248, dated October12, 1880.

Application filed August 18, 1880. (No model.)

To all whom it may concern:

Be it known that 1, THOMAS J. HOLMES, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented certain Improve ments in Liquid-Ejectors, of which thefollowin g is a full, clear, and exact description, reference being badto the accompanying drawings, making part of this specification, inwhich- Figure 1 is a perspective view of a liquid receptacle having myinvention applied thereto. Fig. 2 is a vertical section through thecenter of the same, enlarged Figs. 3 and 4, slight modifications ofconstruction.

My present invention consists in a bent tube provided with an orifice,located preferably at its lower bent portion, in combination with apiston or plunger moving air-tight in a barrel at the top of one branchof the tube, for the purpose of forcing the liquid in intermittent jetsfrom a discharge-outlet (preferably of contracted size) located at thetop of the other branch of said tube, by which construction I produce asimple liquid-ejector of superior capacity, without valves, adapted forvarious uses, as hereinafter set forth.

To enable others skilled in the art to understand and use my invention,I will proceed to describe the manner in which I have carried it out.

In the said drawings, A represents a receptacle for containing liquid,closed at its month by a plug or stopper, a, covered by a cap, B, saidstopper and cap having a central cylindrical opening extendingvertically through them for the reception of a tubular barrel, 0, whichmay have a screw-thread out on its exterior, by which it can be securelyheld within the stopper. Connected with the bottom of this barrel is onebranch, b, of a tube, D, of smaller diameter than the barrel, extendingvertically down into the liquid-receptacle to a point preferably nearits bottom. The tube D is here bent so as to form another branch, 0,which extends up alongside of and parallel, or nearly so, with the firstbranch, b. The branch 0 also passes up through the stopper a, where thetop of the tube is bent so as to form a horizontal branch, (1, whichprojects out a short distance through an aperture in the flange e of thecap B, the outer end of the horizontal branch (1 being provided with adischarge-orifice, h, of contracted size.

Within the under side of the bent portion of the tube D, at the junctionof its branches 1) c, is formed an inlet-opening, i, for the admissionthereto ot' the liquid from the receptacle A.

The barrel 0 contains an air-tight piston, E, the rod or stem It ofwhich projects up through the cap B, and is provided at its top with anenlargement or head,- l.

\Vithin the barrel 0 is a spiral spring, m, the lower end of which bearsupon its bottom, the upper end of the spring bearing on the under sideof the piston, which is turned down of smaller diameter to enter thespace within the top of the spring, thus affording a suitable bearingtherefor.

To preventtthe piston from being forced out of the barrel by the actionof the spring m, I form upon the top of the cap B or continuation of thebarrel 0 a projection, n, cast in one and the same piece therewith,which projection, after the piston is packed and introduced, I turn orspread in and burnish around the stem 70, thus forming a shoulder, 19,which limits the upward movement of the piston and keeps it in placewithin the barrel. (See Fig. 2.)

The projection 02 and the shoulder p formed thereby may, however, bedispensed with, and the interior of the top of the cap or continuationof the barrel be provided with a female screw-thread for the receptionof a screw-nut, 1', against the under side of which the piston may bear,and thus be prevented from being pushed out by the spring, (see Fig. 3but I prefer the construction shown in Fig. 2, as it can be effected ata less cost.

Instead of placing the spring below the piston,it may bear on its topand surround the stem is inside the barrel; but I shall probably adoptthe construction first described and illustrated in Fig. 2. The springmay also surround the stem is outside (on top) of the cap, Fig. 4, inwhich case, however, the device would not present a finished appearance.

The discharge-orifice It need not necessarily be contracted in size, asa jet can be ejected were the diameter of the outlet the same, Fig. 4,as the interior of the tube D at any point in its length; but I preferto contract the outlet,

as thereby I obtain a finer jet, which can be thrown a greater distance.

Operation: A supply of liquid being placed in the receptacle A and mydevice applied thereto with the piston up, as seen in Figs. 1 and 2, theliquid rises instantly through the inlet opening into both branches b cof the tube D, when a sudden tap or pressure upon the head of thepiston-rod It causes the piston to descend against the resistance of thespring m and forces the greater portion of the liquid in the branch bdown said branch, around the bend at its bottom, and up into the branch0, together with the liquid therein, out of the discharge-orifice h. Thepressure exerted on the columns of liquid in both branches b c by thedescent of the plunger, in connection with the contracted size of thedischarge-orifice, has the effect of ejecting the liquid therefrom inintermittetit fine streams or jets to a considerable distance. In thisoperation a small portion onlyot'theliquid in the branclibreturnsthrough the inlet-opening into the receptacle, and it will be seen thatalthough the liquid in the receptacle rises instantly in the brancheswhen the piston ascends, said liquid in the receptacle performs theoflice of a natural check-valve, which approximately seals and closesthe inlet-opening 2', thus preventing the return to theliquid-receptacle A of the greater portion of the liquid-column in thebranch I), which, with all of that in the branch 0, is thus compelled toescape through the discharge-orifice h.

The piston may be omitted and one end of the bent tube attached to anelastic bulb, the intermittent streams being produced by the compressionof the air within the bulb.

I prefer to locate the inlet-opening in the lowest part of the benttube, as at that point the entire contents of the receptacle can beutilized; but the inlet maybe made in the top of the bend, or in thestraight portion of the tube, so long as it is situated below the levelof the liquid in the receptacle.

My device, as shown in Figs. 1, 2, 3, and 4, dispenses with a valve andwith a second tube and the labor of securing them in place, the absenceof which features materially simplifies the construction and reduces theexpense.

I claim- 1. A liquid-ejector consisting of a bent continuous tube, D,provided with an inlet-opening, 1', located at or near its lower bend,and a discharge-orifice, h, at its upper bend, in combination with adevice for forcing out the liqaid in intermittent streams, substantiallyas described.

2. The bent tube D, with its inlet-opening t, located at its lower bend,and a dischargeorifice, h, at its upper bend, in combination with abarrel, 0, connected with the branch b of said tube and a piston movingin said barrel, as and for the purposes set forth.

3. A barrel, 0, contracted at its upper end and connected at its bottomwith the bent liquid-tube D, having an inlet-opening, t, located at ornear its lower bend, and a dischargeorifice, h, at its upper bend, incombination with a piston and a spiral spring for automatically raisingthe same, as described.

Witness my hand this 10th day of August, 1880.

THOS. J. HOLMES.

In presence of JOHN H. ELLIS, F. D. HOLMES.

